BYKES 2 Neodymium Super Strong Extremely Powerful Rare Earth Refrigerator Magnet 2" x 1/2" 1/4" Inch Thick Block N52 Size: 2 inch x 1/2 inch x 1/4 inch thick block. Grade: N52 - Extremely powerful magnetic material Nickel (Ni) Plated (silver-like shine) -Axially magnetized Pull Force per magnet is approximately 37 pounds under ideal conditions. WARNING: VERY STRONG MAGNETS. KEEP OUT OF REACH OF ALL CHILDREN. THIS IS NOT A TOY. DO NOT INGEST OR